Here is the full list of all 48 Spider: Rite of the Shrouded Moon achievements.
Collect a Coleophora Moth.
Collect a Death's Head Moth.
Secret Achievement
Finish an incomplete secret society symbol.
Play the game under all 4 conditions.
Collect an Atlas Moth.
Collect a SwallowTail Butterfly.
Collect a Luna Moth.
Witness an event in the Laboratory.
Eat 3 angry hornets without taking any damage.
Eat 33 fireflies.
Discover 5 ways to die.
Investigate the Captain's Quarters.
Create a six-sided web.
Spin 64 4-sided webs.
Find something hidden in the Vault.
Discover a secret in the Study.
Tackle all 5 gnats in a cluster in one jump.
Build a web while maintaining a 5x web multiplier.
Tackle an insect just before dying of hunger.
Climb to the roof of Mansion South.
Eat two insects with one tackle.
Complete a web with 6+ sides without touching the ground.
Trap all bugs, eat none.
Earn Scholar or better rank in 30 levels.
Tackle a hornet after eating 10 bugs in a combo.
Eat an insect exactly at midnight.
Swat 50 houseflies.
Tackle a hornet while jumping from one web to another.
Juggle a cricket or grasshopper three times.
Attain rank of Knight in 30 levels.
Earn 50,000 points in less than 15 seconds.
Earn 32,500 points consuming only marshflies.
Max out both of your multipliers.
Trap 3 clusterflies in a 9-sided web.
Attain rank of Knight for the first time.
Trap a snakefly in a 7-sided web.
Build an 8-sided web that isn't strong.
Tackle a dragonfly into a hornet.
Trap 10 insects in a 10-sided web.
Complete a level in under thirty seconds.
Enter a code that is valid but expired.